CN116411964A - Hydraulic fracturing cutting cooperative device suitable for hard rock and use method - Google Patents

Abstract

The invention discloses a hydraulic fracturing cutting cooperative device suitable for hard rock and a method of use thereof, belonging to the technical field of high-efficiency and rapid excavation of hard rock roadways (tunnels). The hydraulic fracturing cutting cooperative device suitable for hard rock provided by the invention Equipment, including drill pipe, pneumatic drilling system, hydraulic fracturing system, coordinated control system and cutting head. The hydraulic fracturing and cutting cooperative device suitable for hard rock provided by the present invention can be used to drill and fracture the required hard rock to reduce the strength of the rock mass. When the fracturing effect is good, use the cutting head to correct the fracture After the hard rock is cut, the whole process is completed by the same equipment, so as to achieve the purpose of safe, continuous and efficient mining. It overcomes the problems of slow speed, low efficiency, and many procedures of conventional hard rock fracturing, reduces the working steps of hard rock excavation, truly makes the hard rock excavation process an integrated process, and improves the mining efficiency of hard rock.

Description

A hydraulic fracturing cutting cooperative device suitable for hard rock and its application method

technical field

The invention belongs to the technical field of high-efficiency and rapid excavation of hard rock roadways (tunnels), and in particular relates to a hydraulic fracturing cutting cooperative device suitable for hard rock and a use method.

Background technique

Due to the complex geological structure of the deep stratum, hard rock roadways are often encountered during coal mine excavation. The drilling and blasting method of rock roadway is maintained at a level of 70m-80m/month all year round. The excavation efficiency is low and the relationship between mining and replacement is tense. The situation faced by metal mines is even more severe. There are 112 foreign metal mines with a mining depth of more than 1000m, of which 16 mines have a mining depth of more than 3000m (12 are located in South Africa, all of which are gold mines). Especially when the roadway rock's Platts coefficient f>6, the rock roadway excavation has problems such as slow advancing speed, large resource consumption, and high excavation cost. Therefore, the contradiction between the difficulty of hard rock roadway excavation and the increase in energy demand has become increasingly prominent, and it is a major problem that needs to be solved urgently.

In view of the difficulty of excavating deep underground hard rock roadways, many scholars have begun to optimize and adjust the excavation equipment and technology of whole rock roadways. Rock breaking by drilling and blasting has always been the dominant method for roadway excavation and mining in hard rock mines, and the blasting process has also been optimized in recent years. Its main advantages are fast operation preparation, strong adaptability to rock, flexible movement, and easy handling of geological faults and technical failures. However, there are still disadvantages such as low average excavation speed, difficulty in organizing multi-process cross-operation, serious hazards of gun smoke and high risk.

Therefore, in order to solve the hazards and shortcomings of blast mining, the mechanized mining technology of hard rock underground mines has gradually become the focus of scholars' research. Scholars have summarized the types of equipment for mechanized continuous mining of underground hard rock, which are divided into drilling equipment, cutting disc roadheaders, rotary cutting disc roadheaders, and cantilever type roadheaders. In recent years, the structure of the cutter head used in roadheaders in my country has been continuously improved, and the material has been continuously optimized, which has promoted the continuous improvement of its overall performance, and the hard rock excavation equipment and technology have been optimized to a greater extent. However, in order to achieve high-efficiency tunneling in hard rock roadways, it is difficult to achieve a good tunneling effect by only optimizing the structure of the pick cutter head. It is necessary to change the mechanical properties of the hard rock in the roadway at the same time. Under changing conditions, the purpose of improving the working efficiency of the roadheader is achieved by changing the structure and strength of the rock and rock mass.

At present, the most efficient hard rock roadway excavation technology is to pre-treat the rock mass and then assist mechanized cutting to break the rock. In particular, the effect of hydraulic fracturing-assisted mechanical rock breaking is more obvious. It is a widely used and perfect fracturing technology, and has been successfully applied to shale oil, tight oil and gas and other fields. The conventional hydraulic fracturing method needs to use a drilling rig to drill hydraulic fracturing holes inside the hard rock, and then move hydraulic fracturing equipment to fracture the hard rock mass. After the fracturing is completed, remove the hydraulic fracturing equipment. Push the roadheader to the working face for excavation.

However, this conventional hydraulic fracturing method is time-consuming and laborious, and it is necessary to improve and optimize the excavation equipment of hard rock roadway (tunnel) so as to achieve the goal of integrating hard rock hydraulic fracturing and excavation.

Contents of the invention

The object of the present invention is to provide a hydraulic fracturing and cutting cooperative device suitable for hard rock and its use method, so as to solve the above-mentioned problems in the prior art.

In order to achieve the above object, the present invention provides a hydraulic fracturing cutting cooperative device suitable for hard rock, including:

A drill pipe, the drill pipe is an integrated hydraulic fracturing and excavation drill pipe, and one end of the drill pipe is detachably connected with a tapered drill bit;

Pneumatic drilling system, the pneumatic drilling system is used to produce high-pressure gas, and drive the drill rod to drill;

a hydraulic fracturing system in communication with the drill pipe, the hydraulic fracturing system for providing high pressure fracturing fluid;

A cooperative control system, the pneumatic drilling system and the hydraulic fracturing system are both connected to the cooperative control system, and the cooperative control system is used to realize the mutual conversion between the pneumatic drilling and hydraulic fracturing functions of the drill pipe;

A cutting head, the cutting head is installed on the roadheader, the drill rod is coaxially sleeved in the middle of the cutting head, and the pneumatic drilling system is in transmission cooperation with the cutting head.

Preferably, the cooperative control system includes a gas-hydraulic pressurized gearbox and a gas-liquid separation conversion chamber, the gas-hydraulic pressurized gearbox is fixedly installed on the console of the roadheader, the pneumatic drilling system, the The hydraulic fracturing systems are all in communication with the gas-liquid pressurization speed-up box; the drill pipe is in communication with the gas-liquid separation conversion chamber, and the gas-liquid separation conversion chamber is used to realize the pneumatic drilling and hydraulic drilling of the drill pipe. The fracturing functions are mutually converted, and the pneumatic drilling system and the hydraulic fracturing system are both in communication with the gas-liquid separation conversion chamber.

Preferably, the pneumatic drilling system includes a high-pressure pneumatic motor, which is used to produce high-pressure gas, and the high-pressure pneumatic motor is fixedly installed on the inner bottom of the gas-hydraulic pressurized gearbox. The side of the machine close to the gas-liquid separation conversion chamber and the top of the high-pressure air motor are fixedly connected with high-pressure air outlet pipes, and control valves are installed on the high-pressure air outlet pipes, and the high-pressure air motor is close to the gas-liquid The high-pressure gas outlet pipe on one side of the separation conversion chamber communicates with the gas-liquid separation conversion chamber; the side of the gas-liquid separation conversion chamber away from the high-pressure pneumatic motor communicates with a power engine, and the drill pipe, the cut-off Cutting head all cooperates with described power engine transmission.

Preferably, the top of the boring machine is fixedly connected with a metal bracket protective shell, and the gas-liquid separation conversion chamber, the gas-liquid pressurized speed-up box, and the console are all arranged in the metal bracket protective shell, and the The power engine is fixedly installed on the metal bracket protective shell.

Preferably, the high-pressure pneumatic motor includes a central shaft, a power core and a rotating outer ring are sheathed on the outside of the central shaft in turn, and the central shaft is composed of a low-pressure air inlet and a high-pressure air outlet; The rotary motion causes the gas to be compressed sharply and discharged through the high-pressure gas outlet.

Preferably, the hydraulic fracturing system includes a high-pressure water pump box, a hydraulic pressure loader is arranged inside the high-pressure water pump box, a water pressure monitor is fixedly connected to the top outer wall of the high-pressure water pump box, and the water pressure monitor It is used to monitor the hydraulic value raised by the hydraulic pressure loader; the high-pressure water pump box communicates with the gas-liquid separation conversion chamber through a high-pressure water pipe, and the gas-liquid pressurization speed-up box is fixedly installed on the high-pressure on the water pipe.

Preferably, the cutting head is provided with a connecting shaft, and the power motor is in transmission cooperation with the cutting head through the connecting shaft; an angle adjustment part is arranged between the power motor and the cutting head, The angle adjusting part is used to control the cutting angle of the cutting head.

Preferably, the angle adjustment part includes a fixed shaft fixedly installed on the top of the power engine, a pin hole is provided at the top of the fixed shaft, and a rocker is hinged to the fixed shaft through the pin hole, and the rocker The interior of the hinged telescopic cylinder is provided with a fixed end of the hinged telescopic cylinder fixedly connected with the rocker, and the moving end of the hinged telescopic cylinder is hinged with the cutting head; the middle part of the rocker is hinged with a fixed telescopic cylinder, and the end of the fixed telescopic cylinder is fixedly connected with the power engine.

A method for using a hydraulic fracturing cutting cooperative device suitable for hard rock, comprising the following steps:

S1. The high-pressure air motor produces high-pressure gas to drive the drill pipe to drill into the hard rock to form a hydraulic fracturing hole;

S2. Adjust the control valve of the gas-liquid separation conversion chamber to realize the mutual switching between the pneumatic drilling and hydraulic fracturing functions of the drill pipe;

S3. The high-pressure water pump box provides high-pressure fracturing fluid;

S4. When the fracturing fluid flows through the gas-hydraulic pressurized gearbox, the pressure of the fracturing fluid is further increased by the high-pressure pneumatic motor;

S5. Adjust the angle of the cutting head to perform all-round fracturing, and cut the fractured rock mass.

Compared with the prior art, the present invention has the following advantages and technical effects:

The invention combines the hydraulic fracturing function of the high-pressure water pump box with the drilling and drilling function of the pneumatic engine through the gas-liquid separation conversion chamber and the gas-liquid pressurization speed-up box, and adjusts the angle of the cutting head after the hard rock fracturing Cut the hard rock in all directions according to the depth of the excavation, reduce the working steps of the hard rock excavation, and truly make the hard rock excavation process an integrated process. The whole process is completed by the same equipment, so as to achieve the purpose of safe, continuous and efficient mining; overcome the conventional Hard rock fracturing has problems such as slow driving speed, low efficiency, and many processes, which improve the mining efficiency of hard rock.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a flow chart of a method of using a hydraulic fracturing cutting cooperative device suitable for hard rock in the present invention;

Fig. 2 is a schematic diagram of a hydraulic fracturing cutting cooperative device suitable for hard rock in the present invention;

Fig. 3 is a detailed structural schematic diagram of a hydraulic fracturing cutting cooperative device suitable for hard rock placed in a complete roadheader in the present invention;

Fig. 4 is a schematic diagram of a high-pressure pneumatic motor of a hydraulic fracturing and cutting cooperative device suitable for hard rock in the present invention;

Fig. 5 is a schematic diagram of a cutting head of a hydraulic fracturing cutting cooperative device suitable for hard rock in the present invention;

Among them: 1. High-pressure water pump box; 2. Water pressure loader; 3. Water pressure monitor; 4. High-pressure water pipe; 5. Gas-liquid pressurized speed-up box; 6. Console; ; 8, control valve; 9, power engine; 10, drill pipe; 11, hard rock; 12, conical drill bit; 13, cutting head; 14, fracturing rock mass; 15, metal support shell; 16, connection Shaft; 17, high-pressure pneumatic motor; 18, high-pressure air outlet pipe; 19, fixed shaft; 20, hinged telescopic cylinder; 21, fixed telescopic cylinder; 22, rotating outer ring; 23, central shaft; 24, power movement; 25, Low-pressure air inlet; 26, high-pressure air outlet.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and examples.

The invention provides a hydraulic fracturing cutting cooperative device suitable for hard rock, including:

Drill pipe 10, the drill pipe 10 is an integrated hydraulic fracturing and excavation drill pipe, one end of the drill pipe 10 is detachably connected with a conical drill bit 12;

Pneumatic drilling system, the pneumatic drilling system is used to produce high-pressure gas and drive the drill pipe 10 for drilling;

A hydraulic fracturing system, the hydraulic fracturing system communicates with the drill pipe 10, and the hydraulic fracturing system is used to provide high-pressure fracturing fluid;

The collaborative control system, the pneumatic drilling system, and the hydraulic fracturing system are all connected to the collaborative control system, and the collaborative control system is used to realize the mutual conversion between the pneumatic drilling and hydraulic fracturing functions of the drill pipe 10;

Cutting head 13, the cutting head 13 is installed on the boring machine, the drill rod 10 is coaxially sleeved in the middle part of the cutting head 13, and the pneumatic drilling system and the cutting head 13 are driven and cooperated.

The invention integrates the three steps of drilling-hydraulic fracturing-excavation of hard rock into a complete process through a hydraulic fracturing and cutting cooperative device, which significantly improves the safe mining efficiency of hard rock excavation.

Further, the cooperative control system includes a gas-hydraulic pressurization speed-up box 5 and a gas-liquid separation conversion chamber 7, the gas-liquid pressurization speed-up box 5 is fixedly installed on the console 6 of the roadheader, and the console 6 can adjust the cutting height by lifting; Both the pneumatic drilling system and the hydraulic fracturing system are in communication with the gas-liquid pressurization speed-up box 5; the drill pipe 10 is in communication with the gas-liquid separation conversion chamber 7, which is used to realize the pneumatic drilling and hydraulic The fracturing functions are mutually converted, and the pneumatic drilling system and the hydraulic fracturing system are all in communication with the gas-liquid separation conversion chamber 7 .

Further, the pneumatic drilling system includes a high-pressure pneumatic motor 17, which is used to produce high-pressure gas. The high-pressure pneumatic motor 17 is fixedly installed on the inner bottom of the gas-liquid pressurization gearbox 5. The high-pressure pneumatic motor 17 is close to the gas-liquid separation One side of the conversion chamber 7 and the top of the high-pressure air motor 17 are fixedly connected with a high-pressure air outlet pipe 18, and a control valve 8 is installed on the high-pressure air outlet pipe 18. The gas pipe 18 is in communication with the gas-liquid separation conversion chamber 7; the side of the gas-liquid separation conversion chamber 7 away from the high-pressure pneumatic motor 17 is connected with a power motor 9, and the drill pipe 10 and the cutting head 13 are all in transmission cooperation with the power motor 9.

Further, the top of the boring machine is fixedly connected with a metal bracket protective shell 15, the gas-liquid separation conversion chamber 7, the gas-liquid pressurized speed-up box 5, and the console 6 are all arranged in the metal bracket protective shell 15, and the power engine 9 is fixedly installed in the metal bracket protective shell 15. On the metal bracket protective shell 15.

Further, the high-pressure pneumatic motor 17 includes a central shaft 23, and the outer side of the central shaft 23 is sequentially provided with a power core 24 and a rotating outer ring 22. The central shaft 23 is composed of a low-pressure air inlet 25 and a high-pressure air outlet 26; The rotary motion of the core 24 causes the gas to be compressed sharply and discharged through the high pressure gas outlet 26 .

Further, the hydraulic fracturing system includes a high-pressure water pump box 1, a hydraulic pressure loader 2 is arranged inside the high-pressure water pump box 1, and a water pressure monitor 3 is fixedly connected to the top outer wall of the high-pressure water pump box 1, and the water pressure monitor 3 is used for Monitor the water pressure value raised by the hydraulic loader 2; the high-pressure water pump box 1 communicates with the gas-liquid separation conversion chamber 7 through the high-pressure water pipeline 4, and the gas-liquid pressurization speed-up box 5 is fixedly installed on the high-pressure water pipeline 4.

Further, the cutting head 13 is provided with a connecting shaft 16, and the power motor 9 is coupled with the cutting head 13 through the connecting shaft 16; an angle adjustment part is arranged between the power motor 9 and the cutting head 13, and the angle adjustment part is used for The cutting angle of the cutting head 13 is controlled.

Further, the angle adjustment part includes a fixed shaft 19 fixedly installed on the top of the power engine 9, the top of the fixed shaft 19 is provided with a pin hole, the fixed shaft 19 is hinged with a rocker through the pin hole, and the inside of the rocker is provided with a hinged telescopic cylinder 20 , the fixed end of the hinged telescopic cylinder 20 is fixedly connected with the rocking rod, and the movable end of the hinged telescopic cylinder 20 is hinged with the cutting head 13; the middle part of the rocking rod is hinged with a fixed telescopic cylinder 21, and the end of the fixed telescopic cylinder 21 is fixed with the power engine 9 connect.

The drill pipe 10 used in the hydraulic fracturing drilling of the present invention is the same pipeline as the high-pressure pipeline used in hydraulic fracturing, and the different functions of drilling and hydraulic fracturing are realized by switching the control valve 8 of the gas-liquid separation conversion chamber 7 . For example, open the control valve 8 of the high-pressure air outlet pipe 18, but close the control valve 8 of the gas-liquid separation conversion chamber 7 to realize the pneumatic drilling function, and the gas enters the gas-liquid separation conversion chamber 7 through the high-pressure pneumatic motor 17 and drives the drill through the power engine The rod 10 is drilled into the borehole required to form the hydraulic fracturing. On the contrary, closing the control valve 8 of the high-pressure air outlet pipe 18 and opening the control valve 8 of the gas-liquid separation conversion chamber 7 can realize the hydraulic fracturing function. , to further increase the pressure of the fracturing fluid, and then enter the drill pipe 10 through the gas-liquid separation conversion chamber 7 to realize the fracturing function.

A method for using a hydraulic fracturing cutting cooperative device suitable for hard rock, comprising the following steps:

S1. The high-pressure air motor 17 outputs high-pressure gas to drive the drill pipe 10 to drill into the hard rock to form a hydraulic fracturing hole;

S2. Adjust the control valve 8 of the gas-liquid separation conversion chamber 7 to realize the mutual switching between the pneumatic drilling and hydraulic fracturing functions of the drill pipe 10;

S3. The high-pressure water pump box 1 provides high-pressure fracturing fluid;

S4. When the fracturing fluid flows through the gas-liquid pressurized speed-up box 5, the pressure of the fracturing fluid is further increased by the high-pressure pneumatic motor 17;

S5. Adjust the angle of the cutting head 13 to perform all-round fracturing, and cut the fractured rock mass.

The present invention combines the hydraulic fracturing function of the high-pressure water pump box 1 with the perforating and drilling function of the pneumatic engine through the gas-liquid separation conversion chamber 7 and the gas-liquid pressurization speed-up box 5. The angle and depth of the head 13 cut the hard rock in all directions, reducing the working steps of the hard rock excavation, and truly making the hard rock excavation process an integrated process. The drill pipe 10 for hydraulic fracturing is the same device as the drill pipe 10 for excavation. One end of the drill pipe 10 is connected to the gas-liquid separation conversion chamber 7, and the pneumatic drill pipe excavation and hydraulic pressure are adjusted through the control valve 8 in the gas-liquid separation conversion chamber 7. Split work order. By adjusting the hinged telescopic cylinder 20 on the cutting head 13 to control the cutting angle of the cutting head 13, the angle of the drill pipe 10 for hydraulic fracturing and driving also changes accordingly, realizing the all-round integrated drilling and fracturing of hard rock. cutting.

The above are only preferred specific implementation methods of the present application, but the scope of protection of the present application is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. All should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (9)

1. A hydraulic fracturing cutting cooperative device suitable for hard rock, characterized in that it comprises: a drill rod (10), the drill rod (10) is an integrated hydraulic fracturing and excavation drill rod, and one end of the drill rod (10) is detachably connected with a tapered drill bit (12); a pneumatic drilling system, the pneumatic drilling system is used to produce high-pressure gas and drive the drill rod (10) to drill holes; a hydraulic fracturing system, the hydraulic fracturing system is in communication with the drill pipe (10), and the hydraulic fracturing system is used to provide high-pressure fracturing fluid; A cooperative control system, the pneumatic drilling system and the hydraulic fracturing system are all in communication with the cooperative control system, and the cooperative control system is used to realize the pneumatic drilling and hydraulic fracturing functions of the drill pipe (10) Mutual conversion; A cutting head (13), the cutting head (13) is installed on the roadheader, the drill rod (10) is coaxially sleeved in the middle part of the cutting head (13), the pneumatic drilling system and The cutting head (13) is driven and matched. 2. The hydraulic fracturing cutting cooperative device suitable for hard rock according to claim 1, characterized in that, the cooperative control system comprises a gas-liquid pressurization speed-up box (5) and a gas-liquid separation conversion chamber (7), The gas-hydraulic pressurization speed-up box (5) is fixedly installed on the console (6) of the roadheader, and the pneumatic drilling system and the hydraulic fracturing system are connected with the gas-liquid pressurization speed-up box ( 5) communication; the drill pipe (10) communicates with the gas-liquid separation conversion chamber (7), and the gas-liquid separation conversion chamber (7) is used to realize pneumatic drilling and hydraulic drilling of the drill pipe (10). The fracturing functions are mutually converted, and both the pneumatic drilling system and the hydraulic fracturing system are in communication with the gas-liquid separation conversion chamber (7). 3. The hydraulic fracturing cutting coordination device suitable for hard rock according to claim 2, characterized in that, the pneumatic drilling system includes a high-pressure pneumatic motor (17), and the high-pressure pneumatic motor (17) is used for High-pressure gas is produced, and the high-pressure pneumatic motor (17) is fixedly installed on the inner bottom of the gas-liquid pressurization speed-up box (5), and the high-pressure pneumatic motor (17) is close to the gas-liquid separation conversion chamber (7) One side, the top of the high-pressure air motor (17) are all fixedly communicated with a high-pressure air outlet pipe (18), and a control valve (8) is installed on the high-pressure air outlet pipe (18), and the high-pressure air motor (17) ) The high-pressure outlet pipe (18) near the side of the gas-liquid separation conversion chamber (7) communicates with the gas-liquid separation conversion chamber (7); the gas-liquid separation conversion chamber (7) is far away from the high pressure One side of the air motor (17) is communicated with a power motor (9), and the drill rod (10) and the cutting head (13) are all in transmission cooperation with the power motor (9). 4. The hydraulic fracturing and cutting coordination device suitable for hard rock according to claim 3, characterized in that, the top of the roadheader is fixedly connected with a metal support protective shell (15), and the gas-liquid separation conversion chamber (7), the gas-hydraulic pressurized gearbox (5), and the console (6) are all arranged in the metal bracket protective shell (15), and the power engine (9) is fixedly installed on the metal bracket on the bracket protective case (15). 5. The hydraulic fracturing cutting coordination device suitable for hard rock according to claim 3, characterized in that, the high-pressure pneumatic motor (17) includes a central shaft 23, and the outer side of the central shaft 23 is sequentially sleeved with The power core (24), the rotating outer ring (22), and the central shaft 23 are composed of a low-pressure air inlet (25) and a high-pressure air outlet (26). 6. The hydraulic fracturing cutting coordination device suitable for hard rock according to claim 2, characterized in that, the hydraulic fracturing system comprises a high-pressure water pump box (1), and the high-pressure water pump box (1) is provided with There is a water pressure loader (2), and a water pressure monitor (3) is fixedly connected to the top outer wall of the high-pressure water pump box (1), and the water pressure monitor (3) is used to monitor the water pressure loader (2) The hydraulic pressure value that is promoted; The high-pressure water pump box (1) communicates with the gas-liquid separation conversion chamber (7) through the high-pressure water pipe (4), and the gas-liquid pressurization speed-up box (5) It is fixedly installed on the high-pressure water pipe (4). 7. The hydraulic fracturing cutting cooperative device suitable for hard rock according to claim 3, characterized in that, the cutting head (13) is provided with a connecting shaft (16), and the power engine (9) Through the transmission of the connecting shaft (16) and the cutting head (13), an angle adjustment part is arranged between the power engine (9) and the cutting head (13), and the angle adjustment part is used for Used to control the cutting angle of the cutting head (13). 8. The hydraulic fracturing cutting coordination device suitable for hard rock according to claim 7, characterized in that, the angle adjustment part includes a fixed shaft (19) fixedly installed on the top of the power engine (9), The top of the fixed shaft (19) is provided with a pin hole, and the fixed shaft (19) is hinged with a rocker through the pin hole, and the inside of the rocker is provided with a hinged telescopic cylinder (20), and the hinged telescopic The fixed end of cylinder (20) is fixedly connected with described rocking bar, and the moving end of described hinged telescopic cylinder (20) is hinged with described cutting head (13); The middle part of described rocking bar is hinged with fixed telescopic cylinder (21 ), the end of the fixed telescopic cylinder (21) is fixedly connected with the power engine (9). 9. The method for using the hydraulic fracturing cutting cooperative device suitable for hard rock according to any one of claims 1-8, characterized in that it comprises the following steps: S1. The high-pressure air motor (17) outputs high-pressure gas to drive the drill pipe (10) to drill into hard rock to form a hydraulic fracturing hole; S2. Adjust the control valve (8) of the gas-liquid separation conversion chamber (7) to realize the mutual switching between the pneumatic drilling and hydraulic fracturing functions of the drill pipe (10); S3. The high-pressure water pump box (1) provides high-pressure fracturing fluid; S4. When the fracturing fluid flows through the gas-liquid pressurized speed-up box (5), the pressure of the fracturing fluid is further increased by the high-pressure pneumatic motor (17); S5. Adjust the angle of the cutting head (13) to perform all-round fracturing, and cut the fractured rock mass.

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